A83/100
WENTZVILLE PWS — Water Quality Report 2026
Serving 41,784 people · Missouri
Water Source
Groundwater
County
—
System ID
MO6010849
Violations
6
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About WENTZVILLE PWS
Is WENTZVILLE PWS water safe to drink?
WENTZVILLE PWS water receives a grade of A (83/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WENTZVILLE PWS detected?
69 contaminants were tested in WENTZVILLE PWS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WENTZVILLE PWS have any EPA violations?
Yes, WENTZVILLE PWS has 6 EPA violation(s) on record, with the most recent in 2018. Violation types include MON, MCL, MR. 2 are health-based violations.
How many people does WENTZVILLE PWS serve?
WENTZVILLE PWS serves approximately 41,784 people, Missouri. The system provides water to 1 community: Wentzville.
What type of water does WENTZVILLE PWS provide?
WENTZVILLE PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MO6010849.
How does WENTZVILLE PWS compare to other utilities in Missouri?
WENTZVILLE PWS scores 83/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Missouri state page for a full comparison of water systems.